What is CVE-2023-54320?

CVE-2023-54320 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 6.3 onward and patched in 6.3.4 and 6.4. CVE-2023-54320 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54320?

CVE-2023-54320 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54320?

Yes, CVE-2023-54320 has been patched. Fixed versions include 6.3.4 and 6.4. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54320 actively exploited?

CVE-2023-54320 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54320

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd: pmc: Fix memory leak in amd_pmc_stb_debugfs_open_v2() Function amd_pmc_stb_debugfs_open_v2() may be called when the STB debug mechanism enabled. When amd_pmc_send_cmd() fails, the 'buf' needs to be released.

Package Linux Kernel

Published 2025-12-30

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 6.3 and later are affected. Fixed in 6.3.4, 6.4 and their respective stable series.

Affected from

≥ 6.3

Fixed in

✓ 6.3.4 6.3.x ✓ 6.4

References

The following references provide additional information about CVE-2023-54320 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/d804adef7b23b22bb82e1b3dd113e9073cea9bc1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f6e7ac4c35a28aef0be93b32c533ae678ad0b9e7
Patch

Frequently asked questions

What is CVE-2023-54320?

CVE-2023-54320 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.3 onward and has been patched in 6.3.4 and 6.4. CVE-2023-54320 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54320?

Yes — CVE-2023-54320 has been patched. Fixed versions include 6.3.4 and 6.4. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54320 actively exploited?

No — CVE-2023-54320 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.